The invention discloses a paper grooving, laminating and embossing all-in-one machine. The paper grooving, laminating and embossing all-in-one machine comprises a paper feeding device, a laminating device, an embossing device and a paper collecting device. Paper is fed from the paper feeding device, enters the laminating device to be laminated, enters the embossing device to be embossed and then is output and collected into the paper collecting device sequentially. A paper passing member used for guiding paper to pass is disposed between the laminating device and the embossing device. The laminated paper output from the laminating device enters the embossing device through the paper passing member. By means of the paper grooving, laminating and embossing all-in-one machine, by arranging the paper passing member, the laminating device and the embossing device, the laminating and embossing integrated operation can be achieved, and the production efficiency of cover paper is greatly improved.